Display panel and display apparatus

ABSTRACT

A display panel and a display apparatus. The display panel includes a display area and a non-display area surrounding the display area, the display area includes a first display area and a second display area, and a light transmittance of the first display area is greater than a light transmittance of the second display area; the display panel includes: a plurality of first pixel units, located in the first display area, the first pixel unit includes a plurality of first sub-pixels with at least three colors; a plurality of demultiplexers, located in the non-display area, the demultiplexer includes at least two signal output terminals with different charging modes, and the first sub-pixels with a same color in the first pixel units are electrically connected to the signal output terminals with a same charging mode in the demultiplexers.

CROSS REFERENCE TO RELATED APPLICATION

The present application is a continuation of International ApplicationNo. PCT/CN2021/099870 filed on Jun. 11, 2021, which claims the benefitof priority to Chinese Patent Application No. 202010862493.5 filed onAug. 25, 2020, both of which are incorporated herein by reference intheir entireties.

TECHNICAL FIELD

The present application relates to the field of display technology, andparticularly to a display panel and a display apparatus.

BACKGROUND

With the rapid development of electronic devices, demands of users forthe screen-to-body ratio are higher and higher, resulting in that thefull-screen display of electronic devices attracts more and moreattention in the industry.

At present, the design with an under-screen camera has been developed,in which the under-screen camera means that the camera is located underthe display screen and does not affect the display of the displayscreen. When the camera is not used by the user, the display screenabove the camera normally displays the image, and when the camera isused by the user, the display screen above the camera does not displaythe image.

In order to ensure the light transmittance of the area corresponding tothe camera in the display screen, the pixel density of this area isgenerally less than that of other areas of the display screen.Therefore, display unevenness (mura) in this area is usually obvious,which affects the user experience.

SUMMARY

A first aspect of the present application provides a display panelcomprising a display area and a non-display area surrounding the displayarea, the display area comprising a first display area and a seconddisplay area, and a light transmittance of the first display area beinggreater than a light transmittance of the second display area; thedisplay panel comprising: a plurality of first pixel units, located inthe first display area, the first pixel unit comprising a plurality offirst sub-pixels with at least three colors; a plurality ofdemultiplexers, located in the non-display area, the demultiplexercomprising at least two signal output terminals with different chargingmodes, wherein the first sub-pixels with a same color in the first pixelunits are electrically connected to the signal output terminals with asame charging mode in the demultiplexers.

A second aspect of the present application provides a display apparatuscomprising the display panel of any one of the embodiments of the firstaspect.

According to the display panel and display apparatus provided by theembodiments of the present application, in the display panel, the lighttransmittance of the first display area is greater than the lighttransmittance of the second display area; the plurality of first pixelunits are located in the first display area and the first pixel unitincludes a plurality of first sub-pixels with at least three colors; theplurality of demultiplexers are located in the non-display area of thedisplay panel and the demultiplexer includes at least two signal outputterminals with different charging modes; and in the first display area,the first sub-pixels with a same color in the first pixel units areelectrically connected to the signal output terminals with a samecharging mode in the demultiplexers. The signal output terminalselectrically connected to the first sub-pixels with a same color have asame charging mode, which can ensure that the first sub-pixels with thesame color are charged with a same charging efficiency and avoidbrightness difference for the first sub-pixels with the same colorcaused by different charging efficiencies, so that display unevenness(mura) in the first display area can be avoided and the display qualityof the first display area is thereby improved.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features, objects, and advantages of the present application willbecome more apparent by reading the following detailed description ofnon-limiting embodiments with reference to the accompanying drawings, inwhich the same or similar reference numerals represent the same orsimilar features. The accompanying drawings are not drawn to actualscale.

FIG. 1 shows a top view of a display panel according to an embodiment ofthe present application;

FIG. 2 shows a partial enlarged diagram of the area Q in FIG. 1 in anexample;

FIG. 3 shows a schematic diagram of the connections between the firstsub-pixels and the demultiplexers according to an embodiment of thepresent application;

FIG. 4 shows a schematic timing diagram of a display panel according toan embodiment of the present application;

FIG. 5 shows a schematic diagram of the connections between the firstsub-pixels and the demultiplexers according to another embodiment of thepresent application, in which compared with FIG. 3 , the first pixelcircuits corresponding to the first sub-pixels with a same color in asame column of the first pixel units are located in a same column;

FIG. 6 shows a schematic diagram of the relationship of the firstsub-pixels and the second sub-pixels with the output terminals of thedemultiplexers according to an embodiment of the present application;

FIG. 7 shows a schematic structural diagram of a display panel accordingto another embodiment of the present application;

FIG. 8 shows a schematic structural diagram of a display apparatusaccording to an embodiment of the present application; and

FIG. 9 shows a cross-sectional view taken along the line A-A in FIG. 8 .

DETAILED DESCRIPTION

Features and exemplary embodiments of various aspects of the presentapplication will be described in detail below. To make the objects,technical solutions and advantages of the present application clearer,the present application will be further described in detail below withreference to the accompanying drawings and specific embodiments. It isunderstood that the specific embodiments described herein are merelyconfigured to explain the present application, rather than to limit thepresent application. For those skilled in the art, the presentapplication can be implemented without some of these specific details.The following description of the embodiments is merely to provide abetter understanding of the present application by illustrating theexamples of the present application.

In order to achieve the full-screen display, a light-transmittingdisplay area may be provided on the display panel. Generally, the pixeldensity (Pixels Per Inch, PPI) of the light-transmitting display area isless than that of other areas of the display panel. Moreover, in theprior art, it is not considered either the charging modes of differentsignal output terminals of the demultiplexer (Demux) are different orthe charging efficiencies corresponding to the different charging modesare also different. In the prior art, the sub-pixels with various colorsin the light-transmitting display area are generally arbitrarilyconnected to the signal output terminals of the demultiplexer, causingthat the sub-pixels with a same color in the light-transmitting displayarea are corresponding to the signal output terminals with differentcharging modes and that the charging efficiencies of the sub-pixels withthe same color are inconsistent, therefore the brightness of thesub-pixels with the same color is inconsistent. Nonetheless, the pixeldensity of the light-transmitting display area is relatively less andthe brightness of the sub-pixels with the same color is inconsistent,mura visible to human eyes usually occurs.

To solve the above problems, the embodiments of the present applicationprovide a display panel and a display apparatus, which will be describedbelow with reference to the drawings.

The embodiments of the present application provide a display panel,which may be an organic light emitting diode (Organic Light EmittingDiode, OLED) display panel.

FIG. 1 shows a top view of a display panel according to an embodiment ofthe present application, and FIG. 2 shows a partial enlarged diagram ofthe area Q in FIG. 1 in an example.

As shown in FIG. 1 , the display panel 100 includes a display area and anon-display area NA surrounding the display area. The display areaincludes a first display area AA1 and a second display area AA2. Thelight transmittance of the first display area AA1 is greater than thelight transmittance of the second display area AA2.

In the present application, the light transmittance of the first displayarea AA1 may be greater than or equal to 15%. In order to ensure thatthe light transmittance of the first display area AA1 is greater than15%, or even greater than 40%, or even a higher light transmittance, thelight transmittance of at least part of functional films of the displaypanel 100 in the embodiment may be greater than 80%, and even the lighttransmittance of at least part of the functional films may be greaterthan 90%.

According to the display panel 100 of the embodiments of the presentapplication, the light transmittance of the first display area AA1 isgreater than the light transmittance of the second display area AA2, sothat the photosensitive assembly may be integrated on the rear of thefirst display area AA1 of the display panel 100. An under-screenintegration is achieved for the photosensitive assembly such as acamera, and moreover, the first display area AA1 can display the image,the display area of the display panel 100 is increased and a full-screendesign is achieved for the display apparatus.

The shape of the first display area AA1 may be a circle, an ellipse, arectangle or other polygons. The first display area AA1 may be disposedclose to the edge or the center of the display panel 100. The specificshape and position of the first display area AA1 may be set according toactual requirements, which are not limited in the present application.

FIG. 3 shows a schematic diagram of the connections between the firstsub-pixels and the demultiplexers according to an embodiment of thepresent application. Referring to FIG. 1 to FIG. 3 together, the displaypanel 100 of the embodiments of the present application may include aplurality of first pixel units 10 and a plurality of demultiplexers 20.The plurality of first pixel units 10 are located in the first displayarea AA1 and the first pixel unit 10 includes a plurality of firstsub-pixels 11 with at least three colors. The accompanying drawings ofthe present application illustrate that each of the first pixel units 10includes a plurality of first sub-pixels 11 with three colors. Theplurality of demultiplexers 20 are located in the non-display area NA ofthe display panel 100 and the demultiplexer includes at least two signaloutput terminals with different charging modes. The accompanyingdrawings of the present application illustrate that the each of thedemultiplexers 20 includes two signal output terminals with differentcharging modes, that is, the first signal output terminal 21 and thesecond signal output terminal 22.

The first sub-pixels 11 with a same color in the first pixel units 10are electrically connected to the signal output terminals with a samecharging mode in the demultiplexers 20. Exemplarily, as shown in FIG. 3, each of the first pixel units 10 includes the first sub-pixels 11 withthree colors, that is, the first sub-pixel 111 with a first color, thefirst sub-pixel 112 with a second color and the first sub-pixel 113 witha third color. The three first sub-pixels 11 with the three colors inthe first pixel unit 10 may be distributed as a Chinese character “A”.In the accompanying drawings of the present application, the samefilling represents sub-pixels with a same color.

FIG. 3 shows a total of 8 first pixel units 10 disposed in 4 rows and 2columns, the first sub-pixel 111 with the first color in each of thefirst pixel units 10 is electrically connected to the first signaloutput terminal 21 of the demultiplexer 20, the first sub-pixel 112 withthe second color in each of the first pixel units 10 is electricallyconnected to the second signal output terminal 22 of the demultiplexer20, and the first sub-pixel 113 with the third color in each of thefirst pixel units 10 is electrically connected to the first signaloutput terminal 21 of the demultiplexer 20.

Exemplarily, a ratio between the signal input terminals and the signaloutput terminals of the demultiplexer 20 may be 1:N, and N is a positiveinteger greater than or equal to 2. That is, the demultiplexer 20includes one signal input terminal and N signal output terminals. Forexample, the demultiplexer 20 includes three signal output terminals,and at least two of the three signal output terminals may have differentcharging modes.

Exemplarily, the time division multiplexing may be utilized to receivedifferent signals from a signal input terminal and send out thedifferent signals through different signal output terminals.

For example, as shown in FIG. 3 , the demultiplexer 20 includes a firstsignal output terminal 21 and a second signal output terminal 22. FIG. 4shows a schematic timing diagram of a display panel according to anembodiment of the present application. Exemplarily, the first signaloutput terminal 21 is controlled by a first control signal output by afirst control signal terminal SW1 and is configured to output a signalwhen the first control signal is a low-level signal. The second signaloutput terminal 22 is controlled by a second control signal output by asecond control signal terminal SW2 and is configured to output a signalwhen the second control signal is a low-level signal.

Exemplarily, within the scanning duration of a row, firstly the firstcontrol signal is at a low level, and then the second control signal isat a low level, the low level of the first control signal does notoverlap with the low level of the second control signal due to the timedivision multiplexing. The display panel of the embodiments of thepresent application further includes scan lines (not shown) electricallyconnected to the first pixel units 10 in each row, and transmits a scansignal (SCAN) to the first pixel units 10 in each row through the scanlines. Since the scanning duration of each row is relatively short, thelow level of the scan signal (SCAN) may overlap with the low level ofthe second control signal. Only when the scan signal (SCAN) is at thelow level, the signals output by the first signal output terminal 21 andthe second signal output terminal 22 can be written to the correspondingfirst sub-pixels. Therefore, since the low level of the first controlsignal does not overlap with the low level of the scan signal, thesignal output by the first signal output terminal 21 may be firstlystored on a signal line and then input to a corresponding firstsub-pixel, and the charging mode of the first signal output terminal 21may be called wire charging. The low level of the second control signaloverlaps with the low level of the scan signal, the signal output by thesecond signal output terminal 22 may be directly input to acorresponding first sub-pixel, and the charging mode of the secondsignal output terminal 22 may be called direct charging. The chargingefficiencies of the two charging modes are different.

According to the embodiments of the present application, the signaloutput terminals electrically connected to the first sub-pixels with asame color have a same charging mode, which can ensure that the firstsub-pixels with the same color are charged with a same chargingefficiency and avoid brightness difference for the first sub-pixels withthe same color caused by different charging efficiencies, so thatdisplay unevenness (mura) in the first display area can be avoided andthe display quality of the first display area is thereby improved.

In some embodiments, still referring to FIG. 3 , the display panel ofthe embodiments of the present application further includes a pluralityof first pixel circuits 12 and a plurality of first data lines 13. Eachof the first sub-pixels 11 is electrically connected to one of the firstpixel circuits 12. In the accompanying drawings of the presentapplication, the filling of the first sub-pixels 11 with respectivecolors is the same as that of the corresponding first pixel circuit.Exemplarily, the first sub-pixel 111 with the first color iscorrespondingly electrically connected to the first pixel circuit 121,the first sub-pixel 112 with the second color is correspondinglyelectrically connected to the first pixel circuit 122, and the firstsub-pixel 113 with the third color is correspondingly electricallyconnected to the first pixel circuit 123. In the first pixel units 10 ina same column, the first pixel circuits 122 corresponding to the firstsub-pixels 112 with the second color may belong to a same column, thefirst pixel circuits 121 corresponding to the first sub-pixels 111 withthe first color may be disposed adjacent to the first sub-pixels 111with the first color, and the first pixel circuits 123 corresponding tothe first sub-pixels 113 with the third color may be disposed adjacentto the first sub-pixels 113 with the third color.

In some embodiments, the circuit structure of the first pixel circuit 12may be any one of a 2T1C circuit, a 3T1C circuit, a 6T1C circuit, a 6T2Ccircuit, a 7T1C circuit, a 7T2C circuit or a 9T1C circuit. In thepresent application, the “2T1C circuit” refers to a pixel circuitincluding two thin film transistors (T) and one capacitor (C), and thesame is true for other “7T1C circuit”, “7T2C circuit”, “9T1C circuit”and so on.

In some embodiments, the plurality of first data lines 13 extend in thefirst display area AA1 along a column direction Y and are distributed atintervals along a row direction X, where the “row” and “column” areinterchangeable. Each of the first data lines 13 is electricallyconnected to at least one first pixel circuit 12 and at least one signaloutput terminal of the demultiplexer 20, and the first sub-pixels 11electrically connected to a same first data line 13 are the firstsub-pixels with a same color. That is, one first data line 13 is onlyelectrically connected to the first sub-pixels 11 with one color, sothat it is convenient to achieve that the signal output terminalselectrically connected to the first sub-pixels with a same color have asame charging mode.

Here, the first data line 13 extends along the column direction Y meansthat the first data line 13 extends along the column direction Y as awhole. As shown in FIG. 3 , exemplarily, each of the first data lines 13includes a first sub-data line 131, a second sub-data line 132 and athird sub-data line 133. The first sub-data line 131 is electricallyconnected to the first sub-pixel 111 with the first color, the secondsub-data line 132 is electrically connected to the first sub-pixel 112with the second color, and the third sub-data line 133 is electricallyconnected to the first sub-pixel 113 with the third color. The firstpixel units 10 in a same column are corresponding to the first pixelcircuits 12 in three columns, the first pixel circuits 12 in threecolumns may include a first column of first pixel circuits, a secondcolumn of first pixel circuits and a third column of first pixelcircuits, the first pixel circuits 122 corresponding to the firstsub-pixels 112 with the second color may belong to the first column offirst pixel circuits, and each of the second column of first pixelcircuits 12 and the third column of first pixel circuits 12 includes thefirst pixel circuit 121 corresponding to the first sub-pixel 111 withthe first color and the first pixel circuit 123 corresponding to thefirst sub-pixel 113 with the third color. In order to ensure that eachof the first data lines 13 is only electrically connected to the firstsub-pixels 11 with one color, the first sub-data line 131 and the thirdsub-data line 133 may be interleaved with each other, and the firstsub-data line 131 and the third sub-data line 133 extend along thecolumn direction Y as a whole.

FIG. 5 shows a schematic diagram of the connections between the firstsub-pixels and the demultiplexers according to another embodiment of thepresent application. In some optional embodiments, as shown in FIG. 2and FIG. 5 , the plurality of first pixel units 10 may be distributed inan array in the first display area AA1, and the first pixel circuits 12corresponding to the first sub-pixels 11 with a same color in a samecolumn of the first pixel units 10 are located in a same column.Exemplarily, in the first pixel units 10 in a same column, the firstpixel circuits 121 corresponding to the first sub-pixels 111 with thefirst color are located in a same column, the first pixel circuits 122corresponding to the first sub-pixel 112 s with the second color arelocated in a same column, and the first pixel circuits 123 correspondingto the first sub-pixels 113 with the third color are located in a samecolumn. As such, the first data lines 13 corresponding to the firstsub-pixels 11 with respective colors may extend linearly along thecolumn direction Y, that is, the first data lines 13 corresponding tothe first sub-pixels 11 with respective colors may not be interleaved,which can prevent the signals on each of the first data lines 13 frominterfering with each other.

FIG. 6 shows a schematic diagram of the relationship of the firstsub-pixels and the second sub-pixels with the output terminals of thedemultiplexers according to an embodiment of the present application. Insome optional embodiments, as shown in FIG. 2 and FIG. 6 , the displaypanel may further include a plurality of second pixel units 30, aplurality of second pixel circuits 32 and a plurality of second datalines 33. The plurality of second pixel units 30 are located in thesecond display area AA2 and each may include a plurality of secondsub-pixels 31 with at least three colors. Exemplarily, the sizes of thefirst sub-pixel 11 and the second sub-pixel 31 with a same color may bethe same, and the distance between the two adjacent first sub-pixels 11with the same color may be greater than the distance between the twoadjacent second sub-pixels 31 with the same color to increase the lighttransmittance of the first display area AA1. FIG. 2 shows that the firstpixel unit 10 includes a dummy sub-pixel 114 which only represents thatit occupies a position of a sub-pixel, but no sub-pixel structure isdisposed at this position. The first sub-pixels and the secondsub-pixels may be formed simultaneously with a same mask to simplify theprocessing.

Each of the second sub-pixels 31 is electrically connected to one of thesecond pixel circuits 32. Exemplarily, each of the second pixel units 30may include a plurality of second sub-pixels with three colors, that is,a second sub-pixel 311 with a first color, a second sub-pixel 312 with asecond color and a second sub-pixel 313 with a third color. The secondsub-pixel 311 with the first color is correspondingly electricallyconnected to the second pixel circuit 321, the second sub-pixel 312 withthe second color is correspondingly electrically connected to the secondpixel circuit 322, and the second sub-pixel 313 with the third color iscorrespondingly electrically connected to the second pixel circuit 323.

Exemplarily, the circuit structure of the second pixel circuit 32 may bethe same as that of the first pixel circuit 12. Alternatively, thenumber of transistors and/or capacitors in the second pixel circuit 32may be greater than the number of transistors and/or capacitors in thefirst pixel circuit 12.

The plurality of second data lines 33 extend in the second display areaAA2 along the column direction Y and are distributed at intervals alongthe row direction X. Each of the second data lines 33 is electricallyconnected to at least one second pixel circuit 32 and at least onesignal output terminal of the demultiplexer 20. Since the pixel densityof the second display area AA2 is relatively great, even if the secondsub-pixels with a same color are electrically connected to the signaloutput terminals with different charging modes, no obvious mura willoccur in the second display area AA2, therefore the charging mode of thesignal output terminals to which the second sub-pixels with respectivecolors are electrically connected may be not limited. Since theplurality of demultiplexers 20 are generally distributed along the rowdirection X, each of the second data lines 33 may be electricallyconnected to the signal output terminals of the demultiplexer 20 that isclose to it, so as to shorten the connecting lines for connecting thesecond data lines 33 with the signal output terminals of thedemultiplexers 20 to further reduce the frame.

In some optional embodiments, still referring to FIG. 2 and FIG. 6 , theplurality of second pixel units 30 may be distributed in an array in thesecond display area AA2, and each of the second pixel units 30 includesthe second sub-pixel 311 with the first color, the second sub-pixel 312with the second color and the second sub-pixel 313 with the third color.

Exemplarily, in the second pixel units 30 in a same column, the secondpixel circuits 322 corresponding to the second sub-pixels 312 with thesecond color may belong to a same column, the second pixel circuits 321corresponding to the second sub-pixels 311 with the first color may bedisposed adjacent to the second sub-pixels 311 with the first color, andthe second pixel circuits 323 corresponding to the second sub-pixels 313with the third color may be disposed adjacent to the second sub-pixels313 with the third color. That is, the second pixel units 30 in a samecolumn are corresponding to the second pixel circuits 32 in threecolumns, the second pixel circuits 32 in three columns may include afirst column of second pixel circuits, a second column of second pixelcircuits and a third column of second pixel circuits, the second pixelcircuits 322 corresponding to the second sub-pixels 312 with the secondcolor may belong to the first column of second pixel circuits, and eachof the second column of second pixel circuits and the third column ofsecond pixel circuits includes the second pixel circuit 321corresponding to the second sub-pixel 311 with the first color and thesecond pixel circuit 323 corresponding to the second sub-pixel 313 withthe third color. That is, the second pixel units 30 in a same column arecorresponding to the second pixel circuits in three columns, the secondpixel circuits in three columns comprise a first column of second pixelcircuits, a second column of second pixel circuits and a third column ofsecond pixel circuits. Herein, the first column of second pixel circuitsand the third column of second pixel circuits are electrically connectedto the second sub-pixel with the first color and the second sub-pixelwith the third color, the second sub-pixels electrically connected toany two adjacent second pixel circuits in the first column of secondpixel circuits have different colors, the second sub-pixels electricallyconnected to any two adjacent second pixel circuits in the third columnof second pixel circuits have different colors, the second sub-pixelselectrically connected to two second pixel circuits in a same row andrespectively in the first column of second pixel circuits and the thirdcolumn of second pixel circuits have different colors, and the secondcolumn of second pixel circuits are electrically connected to the secondsub-pixels with the second color.

Each of the second data lines 33 may extend linearly along the columndirection Y and is electrically connected to the second pixel circuits32 which belong to a same column. Exemplarily, each of the second datalines 33 may include a fourth sub-data line 331, a fifth sub-data line332 and a sixth sub-data line 333. The fourth sub-data line 331 iselectrically connected to the first column of second pixel circuits, thefifth sub-data line 332 is electrically connected to the second columnof second pixel circuits, and the sixth sub-data line 333 iselectrically connected to the third column of second pixel circuits. Assuch, the three second data lines 33 corresponding to each column of thesecond pixel units 30 are not interleaved, which can prevent the signalson the data lines from interfering with each other. Moreover, asdescribed above, since the pixel density of the second display area AA2is relatively great, even if the second sub-pixels with a same color areelectrically connected to the signal output terminals with differentcharging modes, no obvious mura will occur in the second display areaAA2, therefore the fourth sub-data line 331 and the sixth sub-data line333 may be electrically connected to the second sub-pixels withdifferent colors.

In some optional embodiments, still referring to FIG. 2 and FIG. 6 ,each of the first pixel units 10 includes the first sub-pixel 111 withthe first color, the first sub-pixel 112 with the second color and thefirst sub-pixel 113 with the third color. Each of the first data lines13 includes the first sub-data line 131, the second sub-data line 132and the third sub-data line 133. In the first pixel units 10 in a samecolumn, the first pixel circuits 12 corresponding to the firstsub-pixels 11 with a same color may belong to a same column. The firstsub-data line 131 is electrically connected to the first sub-pixel 111with the first color, the second sub-data line 132 is electricallyconnected to the first sub-pixel 112 with the second color, and thethird sub-data line 133 is electrically connected to the first sub-pixel113 with the third color. Each of the first sub-data line 131, thesecond sub-data line 132 and the third sub-data line 133 is electricallyconnected to a corresponding signal output terminal of the demultiplexerthrough any one of the fourth sub-data line 331, the fifth sub-data line332 and the sixth sub-data line 333 in a matching mode. Exemplarily, thefirst sub-data line 131 may be electrically connected to the firstsignal output terminal 21 through the fifth sub-data line 332 in thematching mode, the second sub-data line 132 may be electricallyconnected to the second signal output terminal 22 through the fourthsub-data line 331 in the matching mode, and the third sub-data line 133may be electrically connected to the first signal output terminal 21through the sixth sub-data line 333 in the matching mode. The matchingmode here means that the charging modes of the signal output terminalscorresponding to the sub-data lines in the second data line connected tothe first sub-data line 131 are the same, and similarly, the chargingmodes of the signal output terminals corresponding to the sub-data linesin the second data line connected to the second sub-data line 132 arethe same, and the charging modes of the signal output terminalscorresponding to the sub-data lines in the second data line connected tothe third sub-data line 133 are the same.

The first display area AA1 and the demultiplexers 20 are generallylocated at two sides of the display panel along the column direction andare away from each other, if the first data line 13 is directlyconnected to the demultiplexer 20, the first data line 13 further needsto pass through the second display area AA2, resulting in too manysignal lines in the second display area AA2, which can avoid too manysignal lines in the display panel.

In some optional embodiments, each of the demultiplexers 20 may includethe first signal output terminal 21 and the second signal outputterminal 22 with different charging modes, the first sub-data line 131and the third sub-data line 133 are electrically connected to the firstsignal output terminal 21, and the second sub-data line 132 iselectrically connected to the second signal output terminal 22. This isjust an example, and under a condition that the charging modes of thesignal output terminals to which the first sub-pixels with a same colorare electrically connected are guaranteed to be the same, the connectionrelations between respective sub-data lines and respective signal outputterminals may be set according to actual requirements, which is notlimited in the present application.

In some optional embodiments, referring to FIG. 3 or FIG. 5 , each ofthe demultiplexers 20 may include a first transistor 23 and a secondtransistor 24. A gate of the first transistor 23 is electricallyconnected to the first control signal terminal SW1, and a gate of thesecond transistor 24 is electrically connected to the second controlsignal terminal SW2. A first electrode 231 of the first transistor 23 isthe first signal output terminal 21, a first electrode of 241 the secondtransistor 24 is the second signal output terminal 22, and a secondelectrode 232 of the first transistor 23 and a second electrode 242 ofthe second transistor 24 are electrically connected to a fan-out line40. The above structure is only an example circuit structure of thedemultiplexer 20, and the circuit structure of the demultiplexer 20 isnot limited hereto and may be set according to actual requirements.

FIG. 7 shows a schematic structural diagram of a display panel accordingto another embodiment of the present application. As shown in FIG. 7 ,the display panel 100 further includes a binding area 50. The fan-outline 40 extends to the bonding area 50. In some embodiments, the displaypanel 100 further includes an integrated circuit (Integrated Circuit,IC) chip and a flexible printed circuit (Flexible Printed Circuit, FPC),and the IC chip may be disposed in the binding area 50 through theflexible circuit board. Each of the demultiplexers 20 is electricallyconnected to the IC chip through a fan-out line 40 to receive datasignals sent by the IC chip.

In some optional embodiments, each of the first sub-pixel 111 with thefirst color and the second sub-pixel 311 with the first color is a redsub-pixel, each of the first sub-pixel 112 with the second color and thesecond sub-pixel 312 with the second color is a green sub-pixel, andeach of the first sub-pixel 113 with the third color and the secondsub-pixel 313 with the third color is a blue sub-pixel. The abovedescription is just an example, the first color is not limited to red,the second color is not limited to green, and the third color is notlimited to blue, the colors corresponding to respective sub-pixels maybe set according to actual requirements.

The embodiments of the present application further provide a displayapparatus which may include the display panel 100 of any one of theabove embodiments. A display apparatus of an embodiment will bedescribed below as an example, in which the display apparatus includesthe display panel 100 of the above embodiments.

FIG. 8 shows a schematic structural diagram of a display apparatusaccording to an embodiment of the present application, and FIG. 9 showsa cross-sectional view taken along the line A-A in FIG. 8 . In thedisplay apparatus of the embodiment, the display panel 100 may be thedisplay panel 100 of one of the above embodiments, in which the displaypanel 100 includes the first display area AA1, the second display areaAA2, and the non-display area NA surrounding the first display area AA1and the second display area AA2, and the light transmittance of thefirst display area AA1 is greater than the light transmittance of thesecond display area AA2.

The display panel 100 includes a first surface S1 and a second surfaceS2 opposite to each other, in which the first surface S1 is a displaysurface. The display apparatus further includes a photosensitiveassembly 200 located on a side of the display panel 100 corresponding tothe second surface S2, and the position of the photosensitive assembly200 is corresponding to the position of the first display area AA1.

The photosensitive assembly 200 may be an image capturing device forcapturing external image information. In the embodiment, thephotosensitive assembly 200 is a complementary metal oxide semiconductor(Complementary Metal Oxide Semiconductor, CMOS) image capturing device,and in some other embodiments, the photosensitive assembly 200 may beanother image capturing device such as a charge-coupled device(Charge-coupled Device, CCD) image capturing device. It may beappreciated that the photosensitive assembly 200 may not be limited toan image capturing device. For example, in some embodiments, thephotosensitive assembly 200 may be a light sensor such as an infraredsensor, a proximity sensor, an infrared lens, a flood light sensingelement, an ambient light sensor and a dot projector. In addition, othercomponents such as a telephone receiver and a speaker may also beintegrated on the second surface S2 of the display panel 100 of thedisplay apparatus.

According to the display apparatus of the embodiments of the presentapplication, the signal output terminals electrically connected to thefirst sub-pixels with a same color have a same charging mode, which canensure that the first sub-pixels with the same color are charged with asame charging efficiency and avoid brightness difference for the firstsub-pixels with the same color caused by different chargingefficiencies, so that display unevenness (mura) in the first displayarea can be avoided and the display quality of the first display area isthereby improved.

The above embodiments of the present application do not exhaustivelydescribe all the details, nor do they limit the scope of the presentapplication. Obviously, according to the above description, thoseskilled in the art cam make many modifications and changes. Theseembodiments are specifically described in the specification to betterexplain the principles and practical applications of the presentapplication, so that those skilled in the art can make good use of thepresent application and make modifications based on the presentapplication. The scope of the present application is only defined by theappended claims.

What is claimed is:
 1. A display panel comprising a display area and anon-display area surrounding the display area, the display areacomprising a first display area and a second display area, and a lighttransmittance of the first display area being greater than a lighttransmittance of the second display area; the display panel comprising:a plurality of first pixel units, located in the first display area, thefirst pixel unit comprising a plurality of first sub-pixels with atleast three colors; a plurality of demultiplexers, located in thenon-display area, the demultiplexer comprising at least two signaloutput terminals with different charging modes, wherein the firstsub-pixels with a same color in the first pixel units are electricallyconnected to the signal output terminals with a same charging mode inthe demultiplexers.
 2. The display panel of claim 1, wherein the displaypanel further comprises: a plurality of first pixel circuits, each ofthe first sub-pixels being electrically connected to one of the firstpixel circuits; and a plurality of first data lines extending in thefirst display area along a column direction and being distributed atintervals along a row direction, each of the first data lines beingelectrically connected to at least one first pixel circuit and at leastone signal output terminal of the demultiplexer, and the firstsub-pixels electrically connected to a same first data line being thefirst sub-pixels with a same color.
 3. The display panel of claim 2,wherein the plurality of first pixel units are distributed in an arrayin the first display area, and the first pixel circuits corresponding tothe first sub-pixels with a same color in a same column of the firstpixel units are located in a same column.
 4. The display panel of claim2, wherein each of the first pixel units comprises a first sub-pixelwith a first color, a first sub-pixel with a second color and a firstsub-pixel with a third color; each of the first data lines comprises afirst sub-data line, a second sub-data line and a third sub-data line;wherein the first sub-data line is electrically connected to the firstsub-pixel with the first color, the second sub-data line is electricallyconnected to the first sub-pixel with the second color, and the thirdsub-data line is electrically connected to the first sub-pixel with thethird color; the first pixel units in a same column are corresponding tothe first pixel circuits in three columns, the first pixel circuits inthree columns comprises a first column of first pixel circuits, a secondcolumn of first pixel circuits and a third column of first pixelcircuits, and in the first pixel units in a same column, the first pixelcircuits corresponding to the first sub-pixels with the second colorbelongs to the first column of first pixel circuits, and each of thesecond column of first pixel circuits and the third column of firstpixel circuits comprises the first pixel circuit corresponding to thefirst sub-pixel with the first color and the first pixel circuitcorresponding to the first sub-pixel with the third color; and the firstsub-data line and the third sub-data line corresponding to the firstpixel units in a same column are interleaved with each other.
 5. Thedisplay panel of claim 2, wherein the display panel further comprises: aplurality of second pixel units, located in the second display area, thesecond pixel unit comprising a plurality of second sub-pixels with atleast three colors; a plurality of second pixel circuits, each of thesecond sub-pixels being electrically connected to one of the secondpixel circuits; and a plurality of second data lines extending in thesecond display area along the column direction and being distributed atintervals along the row direction, and each of the second data linesbeing electrically connected to at least one second pixel circuit and atleast one signal output terminal of the demultiplexer.
 6. The displaypanel of claim 5, wherein the plurality of second pixel units aredistributed in an array in the second display area, and each of thesecond pixel units comprises a second sub-pixel with a first color, asecond sub-pixel with a second color and a second sub-pixel with a thirdcolor; and the second pixel units in a same column are corresponding tothe second pixel circuits in three columns, the second pixel circuits inthree columns comprise a first column of second pixel circuits, a secondcolumn of second pixel circuits and a third column of second pixelcircuits; wherein the first column of second pixel circuits and thethird column of second pixel circuits are electrically connected to thesecond sub-pixel with the first color and the second sub-pixel with thethird color, the second sub-pixels electrically connected to any twoadjacent second pixel circuits in the first column of second pixelcircuits have different colors, the second sub-pixels electricallyconnected to any two adjacent second pixel circuits in the third columnof second pixel circuits have different colors, the second sub-pixelselectrically connected to two second pixel circuits in a same row andrespectively in the first column of second pixel circuits and the thirdcolumn of second pixel circuits have different colors, and the secondcolumn of second pixel circuits are electrically connected to the secondsub-pixels with the second color.
 7. The display panel of claim 6,wherein each of the second data lines comprises a fourth sub-data line,a fifth sub-data line and a sixth sub-data line; and the fourth sub-dataline is electrically connected to the first column of second pixelcircuits, the fifth sub-data line is electrically connected to thesecond column of second pixel circuits, and the sixth sub-data line iselectrically connected to the third column of second pixel circuits. 8.The display panel of claim 7, wherein each of the first pixel unitscomprises a first sub-pixel with a first color, a first sub-pixel with asecond color and a first sub-pixel with a third color; each of the firstdata lines comprises a first sub-data line, a second sub-data line and athird sub-data line; wherein the first sub-data line is electricallyconnected to the first sub-pixel with the first color, the secondsub-data line is electrically connected to the first sub-pixel with thesecond color, and the third sub-data line is electrically connected tothe first sub-pixel with the third color; and each of the first sub-dataline, the second sub-data line and the third sub-data line iselectrically connected to a corresponding signal output terminal of thedemultiplexer through any one of the fourth sub-data line, the fifthsub-data line and the sixth sub-data line in a matching mode.
 9. Thedisplay panel of claim 8, wherein each of the demultiplexers comprises afirst signal output terminal and a second signal output terminal withdifferent charging modes, the first sub-data line and the third sub-dataline are electrically connected to the first signal output terminal, andthe second sub-data line is electrically connected to the second signaloutput terminal.
 10. The display panel of claim 9, wherein each of thedemultiplexers comprises a first transistor and a second transistor, agate of the first transistor is electrically connected to a firstcontrol signal terminal, a gate of the second transistor is electricallyconnected to a second control signal terminal, a first electrode of thefirst transistor is the first signal output terminal, a first electrodeof the second transistor is the second signal output terminal, and asecond electrode of the first transistor and a second electrode of thesecond transistor are electrically connected to a fan-out line.
 11. Thedisplay panel of claim 8, wherein each of the first sub-pixel with thefirst color and the second sub-pixel with the first color is a redsub-pixel, each of the first sub-pixel with the second color and thesecond sub-pixel with the second color is a green sub-pixel, and each ofthe first sub-pixel with the third color and the second sub-pixel withthe third color is a blue sub-pixel.
 12. The display panel of claim 1,wherein each of the demultiplexers comprises a first signal outputterminal and a second signal output terminal, the first signal outputterminal is controlled by a first control signal and is configured tooutput a signal when the first control signal is a low-level signal; andthe second signal output terminal is controlled by a second controlsignal and is configured to output a signal when the second controlsignal is a low-level signal.
 13. The display panel of claim 12, whereina low level of the first control signal does not overlap with a lowlevel of a scan signal, a signal output by the first signal outputterminal is firstly stored on a signal line and then input to acorresponding first sub-pixel, and a charging mode of the first signaloutput terminal is wire charging; and a low level of the second controlsignal overlaps with the low level of the scan signal, a signal outputby the second signal output terminal is directly input to acorresponding first sub-pixel, and a charging mode of the second signaloutput terminal is direct charging.
 14. A display apparatus, comprisingthe display panel of claim 1.